Lock and latch.



W. W. BORG.

LOCK AND LATCH.

APPLICATION man oc. 6, 1915.

1 ,1 85,468. Patented May 30, 1915.

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as@ u m u u u u u FVW zzmmggmgqg" M .l il l 0 WERNER WILHELM BORG, OF BALTIMORE, MARYLAND.

LOCK AND LATCH.

Specification of Letters Patent.

Patented May 30, 1916.

Application led October 6, 1915. Serial No. 54,404.

To all whom t may concern.'

Be it known that I, WERNER WILHELM BORG, a subject of the Czar of Russia, having taken out first papers of naturalization of the United States, of Baltimore, Maryland, have invented new and useful Improvements in Locks and Latches, of which the following is a specification.

This invention relates to improvements in locks and latches and more particularly to a permutation lock of the push pin type.

It is the object of this invention to provide a lock for doors and the like in which, when the latch bolt is thrown, the latch bolt may be dead locked by a locking pin passed transversely through the bolt and the lock casing, having a means for securing the pin against removal operated by a push pin permutation lock to engage and release the pin.

The advantages of this lock are that no key is necessary, the bolt is positively held in the thrown position and can not be retracted by tampering. The parts are few in number, simple in construction, readily assembled, and inexpensive to manufacture.

IVhile the preferred forni of this invention is illustrated upon the accompanying sheet of drawing yet it is to be understood that minor detail changes may be made without departing from the scope thereof.

Figure l is a top plan view of this improved lock casing with the cover plate removed showing in full lines the latch bolt thrown and dead locked, and in dotted lines the securing slide and operating disk in released position of the latch bolt. Fig. 2 is a View in vertical transverse section taken on the line 2-2 of Fig. 1. Fig. 3 is an enlarged detail view in side elevation and partly in section of the push pin permutation mechanism. Fig. 4 is an enlarged detail plan view of the top of the permutation casing. Fig. 5 is a diagrammatical development view of the push pins and locking pin securing slide operating disk. f

In the embodiment of this invention, as illustrated, the lock casing 1 is of the usual construction having a cover plate 2 and latch bolt 3 operated by a roll-back 4 actuated bv the spindle 5 of a knob or handle with its inner end recessed and sliding over a stud 6 extending from the back of the casing surrounded by` a coil' compression spring 7.

The latch bolt intermediate the roll-back securing groove 8 and its inner end is -prolbolt is thrown to pass o removal.

`ing through the casing .locking pin 13 which of the bolt.

r[he latch bolt lockingr pin 13 is cylindrlcal 1n form and adapted when the latch transversely through the apertures 10 in the cover plate and 9 in the latch bolt and engage in the recess or co-unter-sinkll in the casing 1. The end adjacent the casing 1 is provided with an annular groove 14 and on the other end with a knob or vbutton 15. To prevent the removal of the locking pin a securing slide 16 is mounted to reciprocate upon the casing, one end of which is-provided. with a slot 17 of sufficient width to allow the slide to engage in the groove 14 of the locking pin and prevent its removal, with one end 18 of the slot enlarged suficientlyr to allow the locking pin to pass therethrough, so that when the latch bolt is thrown and the slide moved to bring the enlargement of its slot in line with the locking pin aperture 9, as shown. in dotted lines on Fig. 1, the locking pin mav be inserted and upon movement of the slide away therefrom the locking pin is engaged by the slide and secured against The slide is reciprocated by a lug-19 extending from the actuating disk of a permutation actuated operating device to engage the sides of a slot or recess 20 in the slide. l

When this lock is applied to a locker, box, or other article where the lock is only capable of operation from one side it is not necessary to provide means, for operating the locking pin securing slide 16 from but one side of the lock, but when the lock is applied to a door and it is desirable to operate the lock from both sides the recess 11 is provided with a central aperture extendto form a passage extending from the shank is provided with a knob or button 15a on its outer end, the shank being of sufficient length to move for a reduced shank 13a Vby a coil spring inclined in the same the body of the locking pin outward to free the latch bolt and the latch bolt is provided with a longitudinal slot 12a allowing the bolt to be retracted over the shank. To re lease the locking pin from the inside of the door, the permutation operated mechanism being on the outer side of the door, a slot 40 is provided upon the lock casing 1 adapted to receive a pin 41 attached to the securing slide 16, which pin is provided with a knob or button 42 upon its exterior end, whereby the slide may be moved from the inside of the door to free the bolt locking pin which may be released from the inside o-f the door by depressing the button 15a so that the latch bolt may be retracted. The permutation'actuated securing slide operating mechanism comprises a disk 21 rotatably mounted upon a stud v22 upon the lock casing 1 having a plurality of radial teeth 23 upon its upper surface, and to pre- 7ent improper or accidental oscillation of the disk about its pivot stud it is held against the cover plate by a spring 24 between the casing 1 and the adjacent face of the disk. The cover plate 2 above the disk 21 is provided with a double row of equally spaced push pin receiving apertures 25 each row having the same number of apertures as there are teeth upon the disk and the rows arranged concentric with the disk with the apertures of the inner row midway between those of the outer row. A plurality of push pins 26 equal in number and similarly arranged to the apertures 25 are reciprocably mounted in a cylindrical casing 27 attached to the cover plate 2 in line wit-h the apertures 25 therein, preferably by spring catches 28 passing through and engaging the under surface of the cover plate. The outer end of the casing 27 is closed and is perforated for the passage of the push pins which are guided by 'a similarly perforated disk 29 secured within the casing 27. To maintain the push pins in extended position each pin is surrounded 30 in engagement with the disk 29 at one end and at the other with a stop 30a on the pin, which when in contact with the casing` closure holds the inner ends of the pins clear of the .casing cover plate 2. The lower ends of the push pins are provided with inclined faces 31 so that when the pin is pushed inward the angular face will engage a tooth of the disk 21 and cause it to move or rotate away from the inclined face. The faces of the pins are all direction with the exception of one pin 32 in each row the faces of which are inclined in the opposite direction, as illustrated on Fig. The faces of these pins 32 are inclined in the direction that will rotate the disk 21 to cause the lug 19 thereof to move the locking pin securing slide 16 into position to release the locking pin 13, as shown in dotted lines on Fig. 1. When one of the radial teeth 23 of the disk 21 is 'in line with the pin 32 of the outerA row and this pin depressed its in clined face will 'engage the tooth and rotate the disk so that one of its teeth will be in line with the other pin 32 of the inner row, and so by `depressing alternately the pins 32 the disk will be continuously rotated. The disk 21 is providedwith a second lug 33 adapted to engage a spring 34 carried by the lock casing and so arranged that the depression of the pin which brings the slide 16 into its releasing position will cause the lug`33 to compress the spring 34 so that upon release of the pin the disk will be returned to the position it occupied before the pin was depressed, the length of the slot or recess 2O in the slide` 16 being sufficient to allow of this movement of the slide operating lug 19, and any further depression of the pin 32 will merely oscillate the lug 19 between the sides of the recess 20. The depression of any of the other pins will rotate the disk in the opposite direction to move the slide to engage the locking pin 13. A' second spring 35 carried upon the lock casing is so arranged that the last depression of the push pin 26 which brings the slide 16 to the end of its movement in securing the locking pin 13 will cause the lug 33 to compress the spring 35 so that upon release of this pin the disk will be returned to the position it occupied before the pin was depressed, and any further depression of such pins will merely cause the lug 19 to oscillate between the sides of the recess 2O in the slide.

When it is desired to allow the depression of but one push pin at one time a selecting disk 36 having a radial slot 37 adapted to allow a single pin of either row to pass therethrough may be mounted between the face of the cover plate 2 and the inner ends of the push pins` having a central shaft rotatably mounted upon the closed end of the push pin casing 27 with an indicator 38 and hand operating knob 39 upon the exterior thereof. The operator will turn the indicator to point to the pin 32 of one row depress and release that pin and then turn the indicator to the pin 32 in the other row and depress and release that pin and continue the operation until the locking pin 13 is released. To secure the locking pin 13 the same operation is continued with any other pin or pins than the two pins 32.

What I claim is 1. In a lock, a lock casing, a latch bolt having a transverse aperture therethrough, a locking pin therefor reciprocably mounted in the lock casing and adapted to engage and deadlock the latch bolt" in theV thrown f position, a locking pin securing slide adapta longitudinal slot for ed to engage the locking pin in the dead locked position and a push pin operated disk adapted to actuate the securing' slide.

2. In a lock, a lock casing, a latch bolt having a transverse aperture therethrough, a locking pin reci procably mounted in apertures therefor in the lock casing and adapted to engage and dead lock the latch bolt in the thrown position, a shank extending from said locking pin passing through the lock casing for manually reciprocating the locking-pin from the inside, the latch bolt provided with a longitudinal slot for the reception of the shank, a locking pin securing slide adapted to engage the locking pin in the dead locked position and a push pin operating disk adapted to actuate the securing slide.

3. In a lock, a lock casing, a latch bolt having a transverse aperture therethrough, a locking pin therefor reciprocably mounted in the lock casing and adapted to engage and dead lock the latch bolt in the thrown position, a locking pin securing slide adapted to engage the locking pin in the dead locked position, the lock casing provided with a slot, a securing slide operating pin extending from the slide through the slot for manually actuating the slide from the inside, and a push pin operated disk adapted to actuate the securing slide from the outside.

1l. In a lock, a lock casing, a latch bolt having a transverse aperture therethrough, a locking pin therefor reciprocably mounted in the lock casing and adapted to engage and dead lock the latch bolt in the thrown position, a shank extending from the locking pin and passing through the lock casing for manually reciprocating the locking pin from the inside, the latch bolt provided with the reception of the shank, a knob on the locking pin to manually reciprocateit from the outside, a locking pin securing slide adapted to engage the locking pin in dead locked position, the casing provided with a slot, and a securing slide operating pin extending from the slide through said slot for manually actuating the slide from the inside, and a push pin operating disk adapted to actuate the securingslide from the outside.

5. In a lock, a lock casing, a latch bolt having a transverse aperture therethrough, a locking pin therefor reciprocably mounted in the lock casing and adapted to engage and dead lock the latch in the thrown position-,a locking pin securing slide adapted to engage the locking pin in the dead locked position and a push pin operated disk adapted to actuate the securing slide having a step b v step rotated movement, a lug upon the disk engaging in a recess provided therefor in the securing slide, a second lug upon the disk and springs upon the lock casing to engage the second lug at each end of movement of the securing slide and return the disk to the position occupied before the reciprocation of the push pin bringing the slide to the end of its movement, said ,recess in the slide being of sufficient length to allow the backward movement of the first lug therein during the return movement.

6. In a lock, a latch bolt, dead locking means therefor, and a slide coacting therewith, actuating means for the slide comprising a rotatable operating disk, a lug thereon adapted to engage the slide, a plurality of radial teeth upon one surface of the disk, a plurality of push pins mounted to reciprocate at right angles to the surface of the said disk and engage the teeth thereon, said push pin provided with inclined inner ends adapted upon depression to rotate the disk in the same direction and a push pin having its inner end inclined in the opposite direction to rotate the disk in the opposite direction.

7. In a lock, a latch bolt, dead locking means therefor, and a slide coacting therewith, actuating means for the slide comprising a rotatable operating disk, a lug thereon adapted to engage the slide, a plurality of radial t'eeth upon one surface of the disk, a plurality of push pins mounted to reciprocate at right angles to the surface of the said disk and engage the teeth thereon, said push pin provided with inclined inner ends adapted upon depression to rotate the disk in the same direction and a push pin having its inner end inclined in the opposite direction to rotate the disk in the opposite direction, and means permitting of the depression of but one push pin at a time.

8. In a lock, a lock casing, a slide mounted to reciprocate therein having a recess, a rotatable operating disk therefor having a lug adapted to engage with said recess, a plurality of teeth upon one surface of said disk, a plurality of reciprocating inclined ended push pins mounted to engage said teeth and rotate the disk in the same direction, a push pin having its end inclined in the opposite direction adapted to rotate the disk in the oppos-ite direction, a second lug upon said disk, springs upon the casing to engage the second lug at the respective ends of movement of the slide and return the disk to the position occupied upon the release of the push pin bringing the slide to the end of its movement, the recess in the slide being of sutiicient width -to allow of the backward movement of the slide engaging lug during the return movement.

9. In a lock, a lock casing, a slide mounted to reciprocate therein having a recess, a rotatable operating disk therefor having a lug adapted to engage in said recess, a plurality of teeth upon one surface of the disk,

vthe disk, springs upon the casing to engage the same lug at the respective ends of movement oi' the slide and return the disk to the position occupied upon the release of the push pin bringing the slide to the en'd of its movement, the recess ol' the slide being of suilicient width to allow the backward movement of the slide engaging lug during the return movement. Y

l0. ln a lock, a lock casing, a slide mounted to reciprocate therein having a recess, a rotatable operating disk therefor having a lug adapted to engage in said recess, a plurality oi'l teeth upon one surface of the disk, 'a plurality of reciprocably mounted push pins arranged in two rows concentric to the disk and equal in number to the teeth upon the disk, said pins having inclined inner end-s adapted to engage the teeth and impart a step by step movement in the same direction to tlre disk, a pin in Y each row having its inner end inclined in an opposite direction adapted to impart a movement to the disk in the opposite direction, a rotatably mounted selecting disk mounted between the teeth or' the operating disk and the inner ends of the push pins having a radial slot therein of a width and depth suii'icient to allow of the passage of one pin from either operating shaft for said selecting disk, and

row therethrough, an

a pointer thereon indicating the push pin over said slot.

ll. ln a lock, a lock casing, a slide mounted to reciprocate therein having a recess, a rotatable operating disk therefor having a lug adapted to engage in said recess, a plurality oi teeth upon one surface of the disk, a plurality of reciprocably mounted push pins arranged in two rows concentric to the disk and equa-l in number to the teeth upon the disk, said pins having inclined inner ends adapted to engage the teeth and impart a step by step movement in the same direction to the disk, a pin in each row having its inner end inclined in an opposite direction adapted to impart amovement to the disk in the opposite direction, a rotatably mounted selecting disk mounted between the teeth oi' the operating disk and the inner 'ends of the push pins having a radial slot therein of a width and depth suiiicient to allow of the passage of one pin from either row therethrough, an operating shalt lor said selecting disk, a pointerv thereon indicating the push pin over said slot, a second lug upon the disk, springs upon the casing to engage the second lug at the respective ends 0l: movement of the slide and return the disk to the posi- Ytion it occupied upon the release of the push pin bringing the slide to the end of its movement,

the recess in the slide being of sufficient width to allow of the backward movement of the slide engaging lug during the return movement. Y

WERNER WILHELM BORG.

Witnesses:

HERMAN HOLLANDER, `CARL P. BOHLAND.

Copies of this pa-tent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. C. 

